<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>增加cookie</title>
</head>
<body>
<% 
String name="admin"; 
Cookie cookie=new Cookie("username",name);//定义对象，(cookie对象名称，cookie的值)
cookie.setMaxAge(24*3600);//设置cookie有效期，单位是秒(天*时间)
response.addCookie(cookie);//增加cookie

%>
<a href="readcookie.jsp">连接</a>
</body>
</html>